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Old 12-17-2010, 08:07 PM   #1
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Gas piping replacement

I have to replace the entire LP piping system in a 74 31'.
I have the diagram so I'm good there.. What I'm exploring now is what materials to use. From what I've gathered so far, the best bet is to go with the "black" pipe for the main line and use copper for the offshoot lines that go to the appliances.

Some pipe cutting and threading doesn't seem so bad.. is this really the best/safest way to go with this?
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Old 12-17-2010, 08:28 PM   #2
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I have to replace the entire LP piping system in a 74 31'.
I have the diagram so I'm good there.. What I'm exploring now is what materials to use. From what I've gathered so far, the best bet is to go with the "black" pipe for the main line and use copper for the offshoot lines that go to the appliances.

Some pipe cutting and threading doesn't seem so bad.. is this really the best/safest way to go with this?
You can use copper tubing, for all of the LPG lines, as Airstream has done.

However, no splices or "T's" are allowed in the interior.

All the tubing, must be exposed, except when it goes thru the underbelly and thru the floor, into the trailer.

Andy
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Old 12-17-2010, 08:36 PM   #3
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Daniel,

I know others will agree when I say that it is the only way to go. When you are strapping the copper line on to the underbelly, make sure that you use rubber insulators, so the metal doesn't rub through the line.
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Old 12-17-2010, 08:39 PM   #4
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You can use copper tubing, for all of the LPG lines, as Airstream has done.

However, no splices or "T's" are allowed in the interior.

All the tubing, must be exposed, except when it goes thru the underbelly and thru the floor, into the trailer.

Andy
So copper for everything? Should be easier than cutting and threading the black pipe.

Did they ship my floor channel?
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Old 12-17-2010, 08:45 PM   #5
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So copper for everything? Should be easier than cutting and threading the black pipe.

Did they ship my floor channel?
It should ship Monday from Ohio, in 4 foot pieces.

Andy
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Old 12-17-2010, 09:05 PM   #6
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Awesome. Thanks.
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Old 12-17-2010, 09:14 PM   #7
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So copper for everything? Should be easier than cutting and threading the black pipe.
That's code. Code is really particular about the "no tees or joins inside the trailer" rule. It's also safer.
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Old 12-17-2010, 09:24 PM   #8
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That's code. Code is really particular about the "no tees or joins inside the trailer" rule. It's also safer.
No shut off valves inside either. Also code.
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Old 12-18-2010, 01:01 AM   #9
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No shut off valves inside either. Also code.
The stove and fridge both have such from the factory on our '71, though.

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Old 12-18-2010, 10:12 AM   #10
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The stove and fridge both have such from the factory on our '71, though.

- Bart
Ditto. As do all AS TTs I have seen.
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Old 12-18-2010, 11:23 AM   #11
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Mine as shut offs for the fridge, stove and furnace. We have updated the appliances but the shut offs were original from the factory.
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Old 12-18-2010, 12:59 PM   #12
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shut offs were allowed inside in the 70's but not now. If you are replacing the propane lines leave them outside the trailer. Personally I don't intend to reinstall them in my trailer when I do the propane lines. More connections are more points that it can leak.
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Old 12-18-2010, 01:35 PM   #13
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Be certain when buying the copper tubing that you get 'Type K' or better tubing that is specifically rated for LPG use. Make sure that you don't get the refrigeration grade copper.
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Old 12-18-2010, 02:15 PM   #14
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Be certain when buying the copper tubing that you get 'Type K' or better tubing that is specifically rated for LPG use. Make sure that you don't get the refrigeration grade copper.
Nice tip. Thanks.
I don't think that I can depend on the people who work at these stores to know anything about anything.. except when break time is..
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